Citation: CHEN Qi, ZHANG Dehe. GRAFTING OF HUMIC ACID ONTO COTTON CELLULOSE (Ⅱ)*[J]. Chinese Journal of Polymer Science, ;1988, 6(2): 165-171. shu

GRAFTING OF HUMIC ACID ONTO COTTON CELLULOSE (Ⅱ)*

CHEN Qi ,
ZHANG Dehe

Received Date: 30 July 1987

Cotton cellulose reacted with epichlorohydrin under the catalytic action of HClO4 and H2O to form 3-chloro-2-hydroxypropyl ether with a substitution degree of 0.61. The chlorine-containing product was treated with aliphatic diamines (ethylenediamine, propylenediamine, etc.) to produce nitrogen-containing cellulose which further reacted with humic acid to give black fiberous graft cellulose. This product contains 27—35% humic acid, 0.90 meq/g acidic groups, possesses 0.49 meq/g Cu2+-complexing capacity and good mechanical strength,and can be used under pH12.
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